Parallel Synthesis of Terminal Alkynes Using a ROMPgel-Supported Ethyl 1-Diazo-2-oxopropylphosphonate
摘要:
ROMPgel-supported ethyl 1-diazo-2-oxopropylphosphonate has been prepared, and the supported reagent has been effectively employed in the conversion of a variety of aldehydes into terminal alkynes under mild reaction conditions. The influence of cross-link structure, comonomers, and polymer structure on reaction efficiency has been examined.
Palladium-Catalyzed Synthesis of Lipophilic Benzo[<i>b</i>]furans from Cardanol
作者:Sandro Cacchi、Giancarlo Fabrizi、Roberta Bernini、Ilse De Salve
DOI:10.1055/s-2007-965939
日期:2007.3
o-Iodocardanol, readily available from cardanol by iodination, has been used to prepare a variety of lipophilic benzo[b]furans. 2-Substituted benzo[b]furans have been prepared by a Sonogashira cross-coupling/cyclization process. 2,3-Disubstituted benzo[b]furans have been obtained from o-alkynylcardanols by an oxypalladation/reductive elimination process.
Compounds or enantiomers of formula (I) or a salt thereof: wherein R1, R2, R3, R4 and R5 are as defined herein, are useful for the manufacture of a medicament for the treatment or prevention of respiratory syncytial virus infection in a mammal.